/* ============================================
   BLINDRANKING - MODERN DARK MODE CSS
   Design: Deep Charcoal & Indigo Accent Palette
   ============================================ */

/* ============================================
   1. CSS VARIABLES / DESIGN TOKENS
   ============================================ */

:root {
    /* Color Palette - Deep Charcoal & Indigo */
    --color-bg-primary: #0f1419;      /* Deep Charcoal */
    --color-bg-secondary: #1a1f2e;    /* Lighter Charcoal */
    --color-bg-tertiary: #252d3d;     /* Card Background */
    --color-text-primary: #e8eaed;    /* Light Text */
    --color-text-secondary: #a8aeb7;  /* Muted Text */
    --color-border: #3a4452;          /* Border Color */
    
    /* Accent Colors */
    --color-accent: #6366f1;          /* Indigo Primary */
    --color-accent-hover: #4f46e5;    /* Indigo Darker */
    --color-accent-light: #818cf8;    /* Indigo Light */
    --color-success: #10b981;         /* Emerald */
    --color-warning: #f59e0b;         /* Amber */
    --color-error: #ef4444;           /* Red */
    --color-error-bg: #7f1d1d;        /* Red Dark BG */
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    
    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-md: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.5rem;
    --font-size-2xl: 2rem;
    --font-weight-regular: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.3);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.4);
    
    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 200ms ease-in-out;
    --transition-slow: 300ms ease-in-out;
    --transition-slowest: 500ms ease-in-out;
}

/* ============================================
   2. GLOBAL / BASE STYLES
   ============================================ */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html,
body {
    width: 100%;
    height: 100%;
    font-family: var(--font-family);
    background-color: var(--color-bg-primary);
    color: var(--color-text-primary);
    line-height: 1.6;
}

body {
    display: flex;
    flex-direction: column;
}

main,
div {
    transition: background-color var(--transition-base);
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--color-bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: var(--radius-md);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-accent);
}

/* ============================================
   3. HEADER
   ============================================ */

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-md) var(--space-lg);
    background-color: var(--color-bg-secondary);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-md);
}

.header-left {
    flex: 1;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-accent-light);
    cursor: pointer;
    user-select: none;
    transition: color var(--transition-base);
}

.logo:hover {
    color: var(--color-accent);
}

.logo i {
    font-size: 1.5em;
}

.header-right {
    display: flex;
    gap: var(--space-md);
    align-items: center;
}

.header-btn {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    background-color: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    cursor: pointer;
    transition: all var(--transition-base);
    font-size: var(--font-size-sm);
}

.header-btn:hover {
    background-color: var(--color-accent);
    border-color: var(--color-accent);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.header-btn.btn-create {
    background-color: var(--color-accent);
    border-color: var(--color-accent);
    color: white;
}

.header-btn.btn-create:hover {
    background-color: var(--color-accent-hover);
    border-color: var(--color-accent-hover);
}

.btn-label {
    display: none;
}

@media (min-width: 768px) {
    .btn-label {
        display: inline;
    }
}

/* ============================================
   4. SCREENS / LAYOUT
   ============================================ */

.screen {
    display: none;
    flex: 1;
    width: 100%;
    overflow-y: auto;
}

.screen.active {
    display: flex;
}

/* ============================================
   5. HOME SCREEN
   ============================================ */

.home-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--space-2xl) var(--space-lg);
    width: 100%;
}

.search-bar {
    display: flex;
    gap: var(--space-md);
    margin-bottom: var(--space-2xl);
}

.search-input {
    flex: 1;
    padding: var(--space-md) var(--space-lg);
    background-color: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    color: var(--color-text-primary);
    font-size: var(--font-size-md);
    transition: all var(--transition-base);
}

.search-input:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.search-btn {
    padding: var(--space-md) var(--space-lg);
}

/* Gallery Grid */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: var(--space-lg);
    margin-bottom: var(--space-2xl);
}

@media (max-width: 768px) {
    .gallery-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
        gap: var(--space-md);
    }
}

/* Game Card */
.game-card {
    background-color: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-sm);
}

.game-card:hover {
    border-color: var(--color-accent);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.game-card-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    background-color: var(--color-bg-secondary);
    transition: filter var(--transition-base);
}

.game-card-image.blur {
    filter: blur(15px);
}

.game-card-content {
    padding: var(--space-lg);
}

.game-card-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    margin-bottom: var(--space-sm);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.game-card-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-md);
}

.game-card-score {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    color: var(--color-accent-light);
    font-weight: var(--font-weight-semibold);
}

.game-card-votes {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.game-card-button {
    width: 100%;
    padding: var(--space-md);
    background-color: var(--color-accent);
    border: none;
    border-radius: var(--radius-md);
    color: white;
    font-weight: var(--font-weight-semibold);
    cursor: pointer;
    transition: all var(--transition-base);
}

.game-card-button:hover {
    background-color: var(--color-accent-hover);
    transform: scale(1.02);
}

/* Loading Indicator */
.loading-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--space-2xl);
    gap: var(--space-lg);
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--color-border);
    border-top-color: var(--color-accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Empty State */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--space-2xl);
    text-align: center;
    gap: var(--space-lg);
}

.empty-state i {
    font-size: 3rem;
    color: var(--color-accent-light);
    opacity: 0.5;
}

.empty-state p {
    color: var(--color-text-secondary);
    font-size: var(--font-size-lg);
}

.hidden {
    display: none !important;
}

/* ============================================
   6. MODAL
   ============================================ */

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.7);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    animation: fadeIn var(--transition-base);
}

.modal.active {
    display: flex;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.modal-content {
    background-color: var(--color-bg-tertiary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    max-width: 600px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    animation: slideUp var(--transition-base);
}

@keyframes slideUp {
    from {
        transform: translateY(20px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-lg);
    border-bottom: 1px solid var(--color-border);
}

.modal-header h2 {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
}

.modal-close {
    background: none;
    border: none;
    color: var(--color-text-secondary);
    font-size: var(--font-size-lg);
    cursor: pointer;
    transition: color var(--transition-base);
    padding: 0;
    display: flex;
    align-items: center;
}

.modal-close:hover {
    color: var(--color-accent);
}

/* ============================================
   7. FORMS
   ============================================ */

form {
    padding: var(--space-lg);
}

.form-group {
    margin-bottom: var(--space-lg);
}

label {
    display: block;
    font-weight: var(--font-weight-medium);
    color: var(--color-text-primary);
    margin-bottom: var(--space-sm);
    font-size: var(--font-size-md);
}

input[type="text"],
input[type="password"],
input[type="email"],
input[type="number"],
textarea,
select {
    width: 100%;
    padding: var(--space-md);
    background-color: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    font-family: var(--font-family);
    font-size: var(--font-size-md);
    transition: all var(--transition-base);
}

input[type="text"]:focus,
input[type="password"]:focus,
input[type="email"]:focus,
input[type="number"]:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

textarea {
    resize: vertical;
    font-family: 'Courier New', monospace;
    font-size: var(--font-size-sm);
}

.help-text {
    display: block;
    margin-top: var(--space-xs);
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
}

/* File Upload Area */
.file-upload-area {
    position: relative;
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-2xl);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-base);
    background-color: var(--color-bg-secondary);
}

.file-upload-area:hover {
    border-color: var(--color-accent);
    background-color: rgba(99, 102, 241, 0.05);
}

.file-upload-area input[type="file"] {
    display: none;
}

.upload-hint {
    pointer-events: none;
}

.upload-hint i {
    font-size: 2rem;
    color: var(--color-accent-light);
    margin-bottom: var(--space-md);
    display: block;
}

.upload-preview {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
    gap: var(--space-md);
    margin-top: var(--space-lg);
}

.preview-item {
    position: relative;
    width: 100%;
    aspect-ratio: 1;
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--color-border);
}

.preview-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.preview-item-remove {
    position: absolute;
    top: 0;
    right: 0;
    background-color: rgba(0, 0, 0, 0.7);
    color: white;
    border: none;
    width: 24px;
    height: 24px;
    cursor: pointer;
    font-size: var(--font-size-sm);
    transition: background-color var(--transition-base);
}

.preview-item-remove:hover {
    background-color: var(--color-error);
}

/* ============================================
   8. BUTTONS
   ============================================ */

.btn {
    padding: var(--space-md) var(--space-lg);
    border: none;
    border-radius: var(--radius-md);
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-md);
    cursor: pointer;
    transition: all var(--transition-base);
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    user-select: none;
}

.btn-primary {
    background-color: var(--color-accent);
    color: white;
}

.btn-primary:hover {
    background-color: var(--color-accent-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-primary:disabled {
    background-color: var(--color-border);
    cursor: not-allowed;
    transform: none;
}

.btn-secondary {
    background-color: var(--color-bg-secondary);
    color: var(--color-text-primary);
    border: 1px solid var(--color-border);
}

.btn-secondary:hover {
    background-color: var(--color-bg-tertiary);
    border-color: var(--color-accent);
}

.btn-block {
    width: 100%;
    justify-content: center;
}

/* ============================================
   9. ERROR & SUCCESS MESSAGES
   ============================================ */

.error-message {
    background-color: var(--color-error-bg);
    color: #fca5a5;
    padding: var(--space-md);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    margin-bottom: var(--space-lg);
    border-left: 3px solid var(--color-error);
}

.success-message {
    background-color: rgba(16, 185, 129, 0.1);
    color: #86efac;
    padding: var(--space-md);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    margin-bottom: var(--space-lg);
    border-left: 3px solid var(--color-success);
}

/* ============================================
   10. TOAST NOTIFICATION
   ============================================ */

.toast-container {
    position: fixed;
    bottom: var(--space-lg);
    right: var(--space-lg);
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.toast {
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-lg);
    background-color: var(--color-bg-secondary);
    color: var(--color-text-primary);
    border-left: 3px solid var(--color-accent);
    box-shadow: var(--shadow-lg);
    animation: toastSlideIn var(--transition-base);
    min-width: 300px;
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

@keyframes toastSlideIn {
    from {
        transform: translateX(400px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.toast.success {
    border-left-color: var(--color-success);
}

.toast.error {
    border-left-color: var(--color-error);
}

.toast.warning {
    border-left-color: var(--color-warning);
}

.toast-icon {
    font-size: var(--font-size-lg);
}

.toast-message {
    flex: 1;
}

/* ============================================
   11. PLAY SCREEN
   ============================================ */

.play-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--space-2xl) var(--space-lg);
    width: 100%;
}

.play-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-2xl);
    padding-bottom: var(--space-lg);
    border-bottom: 1px solid var(--color-border);
}

.play-title {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
}

.play-back {
    background-color: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    padding: var(--space-md) var(--space-lg);
}

.items-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--space-lg);
}

.item-card {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    cursor: pointer;
    transition: all var(--transition-base);
    aspect-ratio: 1;
}

.item-card-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: filter var(--transition-base), transform var(--transition-base);
}

.item-card-image.blur {
    filter: blur(15px);
}

.item-card:hover .item-card-image {
    transform: scale(1.05);
}

.item-card-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
    padding: var(--space-lg);
    color: white;
    opacity: 0;
    transition: opacity var(--transition-base);
}

.item-card:hover .item-card-overlay {
    opacity: 1;
}

.item-card-overlay h3 {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--space-sm);
}

.item-card-overlay p {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.8);
}

/* ============================================
   12. RESULT SCREEN
   ============================================ */

.result-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--space-2xl) var(--space-lg);
    width: 100%;
}

.result-header {
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.result-title {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    margin-bottom: var(--space-lg);
}

.ranking-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.ranking-item {
    display: flex;
    align-items: center;
    background-color: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    gap: var(--space-lg);
    transition: all var(--transition-base);
}

.ranking-item:hover {
    border-color: var(--color-accent);
    transform: translateX(4px);
}

.ranking-image {
    width: 100px;
    height: 100px;
    border-radius: var(--radius-lg);
    object-fit: cover;
    flex-shrink: 0;
}

.ranking-image.blur {
    filter: blur(15px);
}

.ranking-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.ranking-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: var(--color-accent);
    color: white;
    border-radius: 50%;
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-lg);
    flex-shrink: 0;
}

.ranking-badge.first {
    background: linear-gradient(135deg, #fbbf24, #f59e0b);
    box-shadow: 0 0 15px rgba(245, 158, 11, 0.3);
}

.ranking-badge.second {
    background: linear-gradient(135deg, #d1d5db, #9ca3af);
}

.ranking-badge.third {
    background: linear-gradient(135deg, #f97316, #d97706);
}

.ranking-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
}

.ranking-score {
    font-size: var(--font-size-md);
    color: var(--color-accent-light);
    font-weight: var(--font-weight-semibold);
}

.ranking-votes {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

/* ============================================
   13. FOOTER
   ============================================ */

.footer {
    background-color: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
    padding: var(--space-lg);
    text-align: center;
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    margin-top: auto;
}

.footer p {
    margin-bottom: var(--space-sm);
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: var(--space-md);
}

.footer-links a {
    color: var(--color-accent-light);
    text-decoration: none;
    transition: color var(--transition-base);
}

.footer-links a:hover {
    color: var(--color-accent);
    text-decoration: underline;
}

/* ============================================
   14. RESPONSIVE DESIGN
   ============================================ */

@media (max-width: 768px) {
    .header {
        padding: var(--space-md);
    }

    .logo {
        font-size: 1.25rem;
    }

    .home-container {
        padding: var(--space-lg) var(--space-md);
    }

    .search-bar {
        margin-bottom: var(--space-lg);
    }

    .gallery-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    }

    .modal-content {
        width: 95%;
        max-height: 90vh;
    }

    .toast-container {
        bottom: var(--space-md);
        right: var(--space-md);
    }

    .toast {
        min-width: 250px;
    }

    .items-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    }

    .ranking-item {
        flex-direction: column;
        text-align: center;
    }

    .ranking-image {
        width: 150px;
        height: 150px;
    }
}

@media (max-width: 480px) {
    :root {
        --space-lg: 1rem;
        --space-xl: 1.5rem;
        --space-2xl: 2rem;
    }

    .logo {
        font-size: 1rem;
    }

    .logo i {
        font-size: 1.2em;
    }

    .header-btn {
        padding: 0.375rem 0.5rem;
    }

    .gallery-grid {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
        gap: var(--space-md);
    }

    .game-card-image {
        height: 150px;
    }

    .items-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ============================================
   15. UTILITY CLASSES
   ============================================ */

.text-center {
    text-align: center;
}

.text-muted {
    color: var(--color-text-secondary);
}

.text-accent {
    color: var(--color-accent);
}

.text-success {
    color: var(--color-success);
}

.text-error {
    color: var(--color-error);
}

.mt-sm {
    margin-top: var(--space-sm);
}

.mt-md {
    margin-top: var(--space-md);
}

.mt-lg {
    margin-top: var(--space-lg);
}

.mb-sm {
    margin-bottom: var(--space-sm);
}

.mb-md {
    margin-bottom: var(--space-md);
}

.mb-lg {
    margin-bottom: var(--space-lg);
}

.gap-sm {
    gap: var(--space-sm);
}

.gap-md {
    gap: var(--space-md);
}